Google: Nano Banana (Gemini 2.5 Flash Image) · openrouter

Gemini 2.5 Flash Image, a.k.a. "Nano Banana," is now generally available. It is a state of the art image generation model with contextual understanding. It is capable of image generation,...

Base model All models on this base All models of the provider to the provider

Input, $/1M $0.30

Output, $/1M $30.00

Cache read $0.03

Cache write —

Limits

Free: 50 requests a day
Free: 1 000 requests a day (if credits>=10)
Free: 20 requests a minute

Last checked 04.11.2026 12:08:11 UTC Source

Context 32 768

Max output 8 192

Accepts images, text

Last checked 04.11.2026 12:00:14 UTC

Source provider's page

Price alerts

API

OpenAI-compatible API: the official OpenAI SDKs work with this base URL. Replace YOUR_API_KEY with your key from the provider.

API base URL	`https://openrouter.ai/api/v1`
Endpoint	`https://openrouter.ai/api/v1/images/generations`
Model id	`google/gemini-2.5-flash-image`

curl

curl https://openrouter.ai/api/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "google/gemini-2.5-flash-image", "prompt": "a lighthouse at sunset", "n": 1, "size": "1024x1024"}'

Python

import requests

r = requests.post(
    "https://openrouter.ai/api/v1/images/generations",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
      "model": "google/gemini-2.5-flash-image",
      "prompt": "a lighthouse at sunset",
      "n": 1,
      "size": "1024x1024"
    },
)
print(r.json())

JavaScript

const r = await fetch("https://openrouter.ai/api/v1/images/generations", {
  method: "POST",
  headers: {Authorization: "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
  body: JSON.stringify({
    "model": "google/gemini-2.5-flash-image",
    "prompt": "a lighthouse at sunset",
    "n": 1,
    "size": "1024x1024"
  }),
});
console.log(await r.json());

Request (JSON)

{
  "model": "google/gemini-2.5-flash-image",
  "prompt": "a lighthouse at sunset",
  "n": 1,
  "size": "1024x1024"
}

Response (JSON)

{
  "created": 1760000000,
  "data": [
    {
      "url": "https://...",
      "b64_json": null
    }
  ]
}

The address is taken from the provider's model list; check it against the provider's documentation.

Provider's API documentation

Source: AI Rate Card, https://airatecard.com/en/c/offer%3Aopenrouter%7Cgoogle/gemini-2.5-flash-image, prices checked 2026-11-04; seller's page: https://openrouter.ai/google/gemini-2.5-flash-image

Technical details

ID: offer:openrouter|google/gemini-2.5-flash-image